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Which of these statements about \( \left[\mathrm{Co}(\mathrm{CN})_{6}\right]^{3-} \) is true?
(NEET 2015)
\( P \)
(a) \( \left[\mathrm{Co}(\mathrm{CN})_{6}\right]^{3-} \) has four unpaired electrons and will be in a high-spin configuration
W
(b) \( \left[\mathrm{Co}(\mathrm{CN})_{6}\right]^{3-} \) has no unpaired electrons and will be in a high-spin configuration
(c) \( \left[\mathrm{Co}(\mathrm{CN})_{6}\right]^{3-} \) has no unpaired electrons and will be in a low-spin configuration
(d) \( \left[\mathrm{Co}(\mathrm{CN})_{6}\right]^{3-} \) has four unpaired electrons and will be in a low-spin configuration.
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